import type { Localize, LocalizeFn } from "../../../types.ts";
import { buildLocalizeFn } from "../../../_lib/buildLocalizeFn/index.ts";

const eraValues = {
  narrow: ["R", "A"] as const,
  abbreviated: ["RC", "AD"] as const,
  wide: ["ro Chrìosta", "anno domini"] as const,
};

const quarterValues = {
  narrow: ["1", "2", "3", "4"] as const,
  abbreviated: ["C1", "C2", "C3", "C4"] as const,
  wide: [
    "a' chiad chairteal",
    "an dàrna cairteal",
    "an treas cairteal",
    "an ceathramh cairteal",
  ] as const,
};

// Note: in English, the names of days of the week and months are capitalized.
// If you are making a new locale based on this one, check if the same is true for the language you're working on.
// Generally, formatted dates should look like they are in the middle of a sentence,
// e.g. in Spanish language the weekdays and months should be in the lowercase.
const monthValues = {
  narrow: ["F", "G", "M", "G", "C", "Ò", "I", "L", "S", "D", "S", "D"] as const,
  abbreviated: [
    "Faoi",
    "Gear",
    "Màrt",
    "Gibl",
    "Cèit",
    "Ògmh",
    "Iuch",
    "Lùn",
    "Sult",
    "Dàmh",
    "Samh",
    "Dùbh",
  ] as const,
  wide: [
    "Am Faoilleach",
    "An Gearran",
    "Am Màrt",
    "An Giblean",
    "An Cèitean",
    "An t-Ògmhios",
    "An t-Iuchar",
    "An Lùnastal",
    "An t-Sultain",
    "An Dàmhair",
    "An t-Samhain",
    "An Dùbhlachd",
  ] as const,
};

const dayValues = {
  narrow: ["D", "L", "M", "C", "A", "H", "S"] as const,
  short: ["Dò", "Lu", "Mà", "Ci", "Ar", "Ha", "Sa"] as const,
  abbreviated: ["Did", "Dil", "Dim", "Dic", "Dia", "Dih", "Dis"] as const,
  wide: [
    "Didòmhnaich",
    "Diluain",
    "Dimàirt",
    "Diciadain",
    "Diardaoin",
    "Dihaoine",
    "Disathairne",
  ] as const,
};

const dayPeriodValues = {
  narrow: {
    am: "m",
    pm: "f",
    midnight: "m.o.",
    noon: "m.l.",
    morning: "madainn",
    afternoon: "feasgar",
    evening: "feasgar",
    night: "oidhche",
  },
  abbreviated: {
    am: "M.",
    pm: "F.",
    midnight: "meadhan oidhche",
    noon: "meadhan là",
    morning: "madainn",
    afternoon: "feasgar",
    evening: "feasgar",
    night: "oidhche",
  },
  wide: {
    am: "m.",
    pm: "f.",
    midnight: "meadhan oidhche",
    noon: "meadhan là",
    morning: "madainn",
    afternoon: "feasgar",
    evening: "feasgar",
    night: "oidhche",
  },
};

const formattingDayPeriodValues = {
  narrow: {
    am: "m",
    pm: "f",
    midnight: "m.o.",
    noon: "m.l.",
    morning: "sa mhadainn",
    afternoon: "feasgar",
    evening: "feasgar",
    night: "air an oidhche",
  },
  abbreviated: {
    am: "M.",
    pm: "F.",
    midnight: "meadhan oidhche",
    noon: "meadhan là",
    morning: "sa mhadainn",
    afternoon: "feasgar",
    evening: "feasgar",
    night: "air an oidhche",
  },
  wide: {
    am: "m.",
    pm: "f.",
    midnight: "meadhan oidhche",
    noon: "meadhan là",
    morning: "sa mhadainn",
    afternoon: "feasgar",
    evening: "feasgar",
    night: "air an oidhche",
  },
};

const ordinalNumber: LocalizeFn<number> = (dirtyNumber) => {
  const number = Number(dirtyNumber);
  const rem100 = number % 100;
  if (rem100 > 20 || rem100 < 10) {
    switch (rem100 % 10) {
      case 1:
        return number + "d";
      case 2:
        return number + "na";
    }
  }

  if (rem100 === 12) {
    return number + "na";
  }

  return number + "mh";
};

export const localize: Localize = {
  ordinalNumber,

  era: buildLocalizeFn({
    values: eraValues,
    defaultWidth: "wide",
  }),

  quarter: buildLocalizeFn({
    values: quarterValues,
    defaultWidth: "wide",
    argumentCallback: (quarter) => quarter - 1,
  }),

  month: buildLocalizeFn({
    values: monthValues,
    defaultWidth: "wide",
  }),

  day: buildLocalizeFn({
    values: dayValues,
    defaultWidth: "wide",
  }),

  dayPeriod: buildLocalizeFn({
    values: dayPeriodValues,
    defaultWidth: "wide",
    formattingValues: formattingDayPeriodValues,
    defaultFormattingWidth: "wide",
  }),
};
